TopStar Galileo OS and PRS core modules

Core modules for civil and military receiver integrators

Air defence
Defence
Air

The TopStar M Galileo OS (Open Service) and PRS (Public Regulated Service) modules are designed to deliver outstanding navigation accuracy while meeting the specific needs of military and high-risk operational environments. These modules integrate the latest GNSS positioning technologies, ensuring maximum reliability and security for critical missions.

FORCES

Resilience to Jamming and Spoofing

The PRS module features advanced cryptographic and anti-jamming protections, significantly increasing resistance to electronic attacks such as jamming and spoofing. It ensures data integrity and security in high-risk zones.
Operational Autonomy and Safety

These solutions allow the system to operate autonomously and reliably in compliance with civil and military standards, ensuring mission continuity even in hostile environments (compliance to DO 178 and 254 Level C).
Enhanced Accuracy and Availability

The modules deliver precise RMS positioning (<5 meters) using Galileo bi-frequency signals—even in difficult or high-dynamic environments—crucial for military missions requiring pinpoint localization.

Based on more than 30 years of manufacturing GPS and GNSS civil and military receivers, Thales now introduces Galileo core modules for civil and military receiver integrators. The Galileo OS and PRS Core Modules are the world's lowest Size, Weight (50g) and lowest Power (2W) digital solution. They have been designed specifically for companies searching for easy to integrate and standardized Galileo OS and PRS Modules in order to develop their own GNSS receivers.

Thales is currently the only company in France authorized to develop Galileo PRS module technology. It is already integrated into all non-Thales receivers for French platforms.

What are Galileo OS (Open Service) and PRS (Public Regulated Service)?

Galileo OS and PRS core modules are modules designed to be hosted into third-party (non-Thales) GPS/GNSS receivers. They process GPS and Galileo satellite signals to deliver precise positioning services.

- The OS core module for Safe Navigation (Open Service) uses the Galileo’s open signals and is intended for civil or safety-critical uses, offering accurate and reliable navigation. It suits a wide range of applications—civilian or military—that do not require enhanced security features.

- The PRS core module for Secure Navigation (Public Regulated Service) includes advanced cryptographic protection, specifically designed for critical or military operations requiring strong resilience against electronic threats such as jamming and spoofing. As an enhanced version of the OS module, PRS is tailored for high-security and demanding environments, such as military missions, providing maximum reliability and availability even in hostile conditions.

Why choose the TopStar Galileo core modules?

Adding either the OS or PRS module to a GPS/Galileo military receiver significantly enhances the accuracy, reliability, and especially the safety and security of navigation operations. The PRS version, in particular, provides advanced protection, which is essential for sensitive missions where the integrity and confidentiality of positioning data are critical.

Whether your goal is to improve the accuracy of your navigation systems or ensure their security in military contexts, TopStar Galileo modules are built to meet the challenges of critical missions.

Thales is currently the only company in France authorized to develop Galileo PRS technology. This ensures unique expertise and full control over this strategic capability, including the ability to adapt the Galileo PRS signal processing fully autonomously to the specific needs of end users.